What we have here are two examples of epidemiology by anecdote vs. a very general observation of the longevity of certain people.
World War II wreaked havoc with many populations. For example Russians who fought on their western front had very short life expectancies. Conditions were deplorable in many portions of the world after the war. The real issue is observed vs. expected lifespan. Apparently in some parts of Okinawa, people tend to live longer than average. The trend is distinct enough to take notice.
The fact that Asians (Japanese and Okinawans) who move to the West and adopt our lifetyles live about as long and suffer about as much as we do should be telling. We have enough information to know that the Burger and Fries diet might not be on the top of the list of recommended lifestyles. And we also know that stress kills.
So what is going on in Okinawa? If I had to take a guess, these are the factors that I would take note of.
- Consumption of raw fish. We already know this is good for the cardiovascular system. Now we're learning the health benefits to our joints (which would allow us to be active longer), and even prostates. Omega-3 fatty acids not denatured by cooking are worth inclusion in the diet.
- Lack of typical Western animal fats. Beef is the most important one here.
- Consumption of soy vs. other animal products. The reasons are complex here. Soy is good, but don't overdo it.
- Consumption of certain kinds of vegetables. The video mentioned sweet potatoes (high in beta carotene) vs. typical french fries, white potatoes, or pasta. Also include seaweed in that list - a source of another type of carotenoid (fucoxanthin).
- Strong social networks.
- Hard physical work (exercise).
- A positive mental outlook.
- Little tendency to overeat.
There's lots to consider there.
- Bill